Only 55% of Americans know that the sun is a star.
986
Pluto is smaller than Russia.
9
41% of the moon is not visible from earth at any time.
103
The Earth gets 100 tons heavier every day due to falling space dust.
673
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277